Zhang Shun, Wang Yupu, Lin Chunming. DEVELOPMENT OF WATER SHUTOFF PACKER DQYK344-114[J]. Oil Drilling & Production Technology, 2002, 24(2): 71-73. DOI: 10.3969/j.issn.1000-7393.2002.02.023
Citation: Zhang Shun, Wang Yupu, Lin Chunming. DEVELOPMENT OF WATER SHUTOFF PACKER DQYK344-114[J]. Oil Drilling & Production Technology, 2002, 24(2): 71-73. DOI: 10.3969/j.issn.1000-7393.2002.02.023
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DEVELOPMENT OF WATER SHUTOFF PACKER DQYK344-114

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  • Water shutoff about oil well is a routine production measure in continental facies sand oilfield where water injection technology is popular in the development. The pressure differential between water shutoff layer and production layer is increasingly high. The intrinsic packer cannot bear the pressure differential, which causing the successful rate of water shutoff declined and efficiency work period shorten. DQYK344-114 is a new packer being developed to adapt the production need at present. This type of packer possesses complex seal structure with pressing and expanding, which can increase seal by the pressure differential between layers. The availability work pressure differential can reach 35.0MPa.
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